BK Series

Kitagawa BK Series



Each of the Kitagawa BK Series Kits contains the following components:

  • Pressure Reducing Regulator
  • Flowmeter
  • Flow Bypass Valve
  • Timer
  • Detector Tube Tip Cutter
  • Adjustable Wrench
  • Hard Shell Carrying Case
  • Optional 50ml syringe/tubing for use with Oxygen detector tube


Detector tubes for measuring each of the five breathing air components are sold separately:

  • Carbon Monoxide
  • Carbon Dioxide
  • Oil Mist
  • Water Vapor
  • Oxygen


After connecting the BK assembly to the compressed breathing air source to be analyzed, the breathing air is passed through each detector tube at a specific pressure, flow rate and time interval. Each detector tube is made with high purity reagents that absorb and react with the target component. The reaction causes a colorimetric stain whose length is proportional to the component’s concentration. The actual concentration is read directly from the measurement scale printed on the detector tube.
  • Complete analysis for five components within minutes; no need to wait for lab results
  • Connects directly to the breathing air source
  • No need for electrical power or batteries
  • Easily transported in carrying case
  • Very economical
  • Backed by a one year warranty
The Kitagawa BK Series is ideal for anyone involved in the filling, purification, generation, or usage of compressed breathing air. Impurities in breathing air can adversely affect human health. The BK Series is designed to measure these contaminants in SCBA, SCUBA and other pressurized breathing air cylinders, as well as directly from the outlet of an air compressor or purifier. The BK easily measures five components within minutes: carbon monoxide, carbon dioxide, oil mist, water vapor and oxygen.
Substances to be measuredTube No.Measuring range
CARBON MONOXIDE (CO)600SP5-100 ppm
CARBON DIOXIDE (CO2)601SP100-3,000 ppm
OIL MIST602SP0.3-5mg/m3
WATER VAPOR (H2O)603SPA20-160mg/m3
OXYGEN (O2)604SP2-24%
  • Kitagawa BK-346 breathing air analysis kit, CGA 346

    Kitagawa BK-346 breathing air analysis kit, CGA 346

    $1,780.00
  • Kitagawa BK-347 breathing air analysis kit, High Pressure CGA 347

    Kitagawa BK-347 breathing air analysis kit, High Pressure CGA 347

    $2,750.00
  • Kitagawa BK-590 breathing air analysis kit, CGA 590

    Kitagawa BK-590 breathing air analysis kit, CGA 590

    $1,780.00
  • Kitagawa BK-P4M breathing air analysis kit, 1/4" NPT-M

    Kitagawa BK-P4M breathing air analysis kit, 1/4″ NPT-M

    $1,780.00
  • Kitagawa BK-SCUBA breathing air analysis kit, SCUBA YOKE adapter

    Kitagawa BK-SCUBA breathing air analysis kit, SCUBA YOKE adapter

    $1,780.00
  • Kitagawa BK-SHD10 breathing air analysis kit, Schrader valve

    Kitagawa BK-SHD10 breathing air analysis kit, Schrader valve

    $1,780.00
  • Placeholder

    Kitagawa Syringe and Tubing for 604SP

    $36.00

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